The gauge/gravity duality is a conjectured relation between a classical gravity theory and a strongly coupled gauge theory [1]}, [2]}. This duality has been utilized to study various areas of physics such as condensed matter, quantum information theory and the quark-gluon plasma [3]}, [4]}, [5]}, [6]}. A significant example of the gauge/gravity duality is the AdS/CFT correspondence which states that type IIB string theory on (\(d+1\) )-dimensional AdS spacetimes is dual to \(d\) -dimensional superconformal field theories. The gauge/gravity duality provides a powerful tool to investigate various physical quantities in the quantum information theory utilizing their corresponding gravity duals. Some of these quantities are entanglement entropy, mutual information and entanglement of purification. Although it may be difficult to calculate these quantities in the field theory, they are relatively simple to calculate on the gravity side. Surprisingly, the gauge/gravity duality is extended to the more general cases such that the field theories which are not conformal. There are many different families of non-conformal theories which one can study the effect of the non-conformality on their physical observables [7]}, [8]}, [9]}.
